Mike wrote:
I have an old Mastercraft inboard ski boat that I need some help
with fixing. Where the shaft of the prop goes through the hull
there is a
metal plate. The edges around the plate were leaking and it was
sealed with silicon. I cut out the gobs of silicon that were there
and found that the plate sits in a 1/2 inch trough in the fiberglass
hull. When the silicon was removed I can move the plate fairly
easily
by hand, even lifting it up slightly. I replaced the existing
silicon
with Goo marine sealant. I let the sealant set for 24 hours then
lowered the boat back in the water. My little leak turned into a
gusher.

How is this plate supposed to be secured to the boat? Do I just
need
to do a better job with silicone? Is there some adjustment that
needs
to be made to hold the plate on better? Should this have done over
with fiber glass?

Is there not a stuffing box? Normally there is and one tightens it
around the shaft to minimize leaking. Not so tight to impede the
shaft but tight enough so that you just get a bit of water. That
water is then removed occasionally with a bilge pump unless you get it
tweaked so that evaporation = leak.

--

dadiOH
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